<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <!-- 给老板们提醒的邮件demo  -->
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <p th:utext="'本月生日的小伙伴有'+${username}+'!'"></p>
  <p>别忘了为小伙伴们庆生哟~</p>
  <img src='cid:p02'/>
</body>
</html>